High humidity doesn't just leave a home feeling muggy. It can also push an air conditioner to stay on longer, and that extra runtime could mean steeper power bills.
What's happening?
As moisture levels climb, cooling is not the only job your AC is doing. In a July 30 explainer, The Spruce said damp weather puts more pressure on an AC because the unit must remove moisture from the air before it can cool your home effectively, which takes additional energy.
The Spruce noted that humidity around 55% can begin to noticeably strain an air conditioner, especially during extended hot summer periods.
A humid home can feel hotter than the temperature reading suggests. That means even a manageable thermostat setting can still leave the air feeling muggy, causing the system to run longer and use more electricity.
Why does it matter?
When the air indoors gets too damp, your AC ends up handling more than just heat. Higher costs are usually the most noticeable result when an AC has to work harder. Monthly power bills often rise, and the added wear over time can increase the chance of repairs or shorten the life of the system you already have.
Extra moisture can also make a home less comfortable and hurt indoor air quality. Even with the AC running, damp air may still feel clammy, and too much humidity can contribute to mold and mildew issues.
Better equipment can make a real difference. Efficient heating and cooling systems, including heat pumps, can do a better job managing both temperature and moisture while using less energy.
What can I do?
One of the best ways to ease the burden on your AC is to lower indoor moisture. A dehumidifier can remove water from the air, and bathroom fans, kitchen ventilation, and fixing leaks can help prevent humidity from building up inside. It also helps to keep windows and doors closed when conditions outside are hot and sticky.
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Basic maintenance can improve efficiency too, such as replacing filters and making sure vents stay clear. If your current setup struggles every summer, you can compare efficient options and connect with trusted installers with EnergySage.
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